DVDs and DVD players are definitely better than VHS tapes and VCRs. But the one thing they lack is a tracking control. In the days of the VHS tape,the box from Blockbuster always said"IF THE PICTURE ROLLS OR HAS A LOT OF "INTERFERENCE" ADJUST THE TRACKING CONTROL ON YOUR VCR." This solves 90% of all picture problems. If this doesn't solve the problem,adjust your TV controls. If problems persist,bring the cassette back to the store. But since DVD players don't have a tracking control,what should I do if the picture rolls or has a lot of "Interference"?